<!DOCTYPE html>
<html>

<head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.bundle.min.js"></script> </head>

<body>
    <nav class="navbar navbar-light bg-light">
        <form class="form-inline">
            <input class="form-control mr-sm-2" type="search" placeholder="Search"
                aria-label="Search">
            <button class="btn btn-outline-success my-2 my-sm-0" type="submit">
                Search</button>
        </form>
    </nav>
</body>

</html>